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Diffstat (limited to 'src/demos/util/TGAImage.java')
| -rw-r--r-- | src/demos/util/TGAImage.java | 320 |
1 files changed, 0 insertions, 320 deletions
diff --git a/src/demos/util/TGAImage.java b/src/demos/util/TGAImage.java deleted file mode 100644 index a99f4f3..0000000 --- a/src/demos/util/TGAImage.java +++ /dev/null @@ -1,320 +0,0 @@ -/* - * Copyright (c) 2003 Sun Microsystems, Inc. All Rights Reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: - * - * - Redistribution of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * - * - Redistribution in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * Neither the name of Sun Microsystems, Inc. or the names of - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * This software is provided "AS IS," without a warranty of any kind. ALL - * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, - * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A - * PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN - * MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR - * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR - * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR - * ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR - * DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE - * DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, - * ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF - * SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. - * - * You acknowledge that this software is not designed or intended for use - * in the design, construction, operation or maintenance of any nuclear - * facility. - * - * Sun gratefully acknowledges that this software was originally authored - * and developed by Kenneth Bradley Russell and Christopher John Kline. - */ - -package demos.util; - -import java.io.*; -import javax.media.opengl.*; -import com.sun.opengl.utils.*; - -/** - * Targa image reader adapted from sources of the <a href = - * "http://java.sun.com/products/jimi/">Jimi</a> image I/O class library. - * - * <P> - * - * Image decoder for image data stored in TGA file format. - * Currently only the original TGA file format is supported. This is - * because the new TGA format has data at the end of the file, getting - * to the end of a file in an InputStream orient environment presents - * several difficulties which are avoided at the moment. - * - * <P> - * - * This is a simple decoder and is only setup to load a single image - * from the input stream - * - * <P> - * - * @author Robin Luiten - * @author Kenneth Russell - * @version $Revision: 1.3 $ - */ - -public class TGAImage { - private Header header; - private int format; - private byte[] data; - - private TGAImage(Header header) { - this.header = header; - } - - /** - * This class reads in all of the TGA image header in addition it also - * reads in the imageID field as it is convenient to handle that here. - * - * @author Robin Luiten - * @version 1.1 - */ - public static class Header { - /** Set of possible file format TGA types */ - public final static int TYPE_NEW = 0; - public final static int TYPE_OLD = 1; - public final static int TYPE_UNK = 2; // cant rewind stream so unknown for now. - - /** Set of possible image types in TGA file */ - public final static int NO_IMAGE = 0; // no image data - public final static int UCOLORMAPPED = 1; // uncompressed color mapped image - public final static int UTRUECOLOR = 2; // uncompressed true color image - public final static int UBLACKWHITE = 3; // uncompressed black and white image - public final static int COLORMAPPED = 9; // compressed color mapped image - public final static int TRUECOLOR = 10; // compressed true color image - public final static int BLACKWHITE = 11; // compressed black and white image - - /** Field image descriptor bitfield values definitions */ - public final static int ID_ATTRIBPERPIXEL = 0xF; - public final static int ID_LEFTTORIGHT = 0x10; - public final static int ID_TOPTOBOTTOM = 0x20; - public final static int ID_INTERLEAVE = 0xC0; - - /** Field image descriptor / interleave values */ - public final static int I_NOTINTERLEAVED = 0; - public final static int I_TWOWAY = 1; - public final static int I_FOURWAY = 2; - - /** Type of this TGA file format */ - private int tgaType; - - /** initial TGA image data fields */ - private int idLength; // byte value - private int colorMapType; // byte value - private int imageType; // byte value - - /** TGA image colour map fields */ - private int firstEntryIndex; - private int colorMapLength; - private byte colorMapEntrySize; - - /** TGA image specification fields */ - private int xOrigin; - private int yOrigin; - private int width; - private int height; - private byte pixelDepth; - private byte imageDescriptor; - - /** bitfields in imageDescriptor */ - private byte attribPerPixel; // how many attribute bits per pixel - private boolean leftToRight; // order of data on scan line - private boolean topToBottom; // order scan lines stored - private byte interleave; // how rows are stored in image data - - private byte[] imageIDbuf; - private String imageID; - - public Header(LEDataInputStream in) throws IOException { - int ret; - - tgaType = TYPE_OLD; // dont try and get footer. - - // initial header fields - idLength = in.readUnsignedByte(); - colorMapType = in.readUnsignedByte(); - imageType = in.readUnsignedByte(); - - // color map header fields - firstEntryIndex = in.readUnsignedShort(); - colorMapLength = in.readUnsignedShort(); - colorMapEntrySize = in.readByte(); - - // TGA image specification fields - xOrigin = in.readUnsignedShort(); - yOrigin = in.readUnsignedShort(); - width = in.readUnsignedShort(); - height = in.readUnsignedShort(); - pixelDepth = in.readByte(); - imageDescriptor = in.readByte(); - - attribPerPixel = (byte)(imageDescriptor & ID_ATTRIBPERPIXEL); - leftToRight = (imageDescriptor & ID_LEFTTORIGHT) != 0; // not used ? - topToBottom = (imageDescriptor & ID_TOPTOBOTTOM) != 0; - interleave = (byte)((imageDescriptor & ID_INTERLEAVE) >> 6); - - if (idLength > 0) { - imageIDbuf = new byte[idLength]; - in.read(imageIDbuf, 0, idLength); - imageID = new String(imageIDbuf, "US-ASCII"); - } - } - - public int tgaType() { return tgaType; } - - /** initial TGA image data fields */ - public int idLength() { return idLength; } - public int colorMapType() { return colorMapType; } - public int imageType() { return imageType; } - - /** TGA image colour map fields */ - public int firstEntryIndex() { return firstEntryIndex; } - public int colorMapLength() { return colorMapLength; } - public byte colorMapEntrySize() { return colorMapEntrySize; } - - /** TGA image specification fields */ - public int xOrigin() { return xOrigin; } - public int yOrigin() { return yOrigin; } - public int width() { return width; } - public int height() { return height; } - public byte pixelDepth() { return pixelDepth; } - public byte imageDescriptor() { return imageDescriptor; } - - /** bitfields in imageDescriptor */ - public byte attribPerPixel() { return attribPerPixel; } - public boolean leftToRight() { return leftToRight; } - public boolean topToBottom() { return topToBottom; } - public byte interleave() { return interleave; } - - public byte[] imageIDbuf() { return imageIDbuf; } - public String imageID() { return imageID; } - - public String toString() { - return "TGA Header " + - " id length: " + idLength + - " color map type: "+ colorMapType + - " image type: "+ imageType + - " first entry index: " + firstEntryIndex + - " color map length: " + colorMapLength + - " color map entry size: " + colorMapEntrySize + - " x Origin: " + xOrigin + - " y Origin: " + yOrigin + - " width: "+ width + - " height: "+ height + - " pixel depth: "+ pixelDepth + - " image descriptor: "+ imageDescriptor + - (imageIDbuf == null ? "" : (" ID String: " + imageID)); - } - } - - - /** - * Identifies the image type of the tga image data and loads - * it into the JimiImage structure. This was taken from the - * prototype and modified for the new Jimi structure - */ - private void decodeImage(LEDataInputStream dIn) throws IOException { - switch (header.imageType()) { - case Header.UCOLORMAPPED: - throw new IOException("TGADecoder Uncompressed Colormapped images not supported"); - - case Header.UTRUECOLOR: // pixelDepth 15, 16, 24 and 32 - switch (header.pixelDepth) { - case 16: - throw new IOException("TGADecoder Compressed 16-bit True Color images not supported"); - - case 24: - case 32: - decodeRGBImageU24_32(dIn); - break; - } - break; - - case Header.UBLACKWHITE: - throw new IOException("TGADecoder Uncompressed Grayscale images not supported"); - - case Header.COLORMAPPED: - throw new IOException("TGADecoder Compressed Colormapped images not supported"); - - case Header.TRUECOLOR: - throw new IOException("TGADecoder Compressed True Color images not supported"); - - case Header.BLACKWHITE: - throw new IOException("TGADecoder Compressed Grayscale images not supported"); - } - } - - /** - * This assumes that the body is for a 24 bit or 32 bit for a - * RGB or ARGB image respectively. - */ - private void decodeRGBImageU24_32(LEDataInputStream dIn) throws IOException { - int i; // row index - int j; // column index - int y; // output row index - int raw; // index through the raw input buffer - int rawWidth = header.width() * (header.pixelDepth() / 8); - byte[] rawBuf = new byte[rawWidth]; - data = new byte[rawWidth * header.height()]; - - if (header.pixelDepth() == 24) { - format = GL.GL_BGR; - } else { - assert header.pixelDepth() == 32; - format = GL.GL_BGRA; - } - - for (i = 0; i < header.height(); ++i) { - dIn.readFully(rawBuf, 0, rawWidth); - - if (header.topToBottom) - y = header.height - i - 1; // range 0 to (header.height - 1) - else - y = i; - - System.arraycopy(rawBuf, 0, data, y * rawWidth, rawBuf.length); - } - } - - /** Returns the width of the image. */ - public int getWidth() { return header.width(); } - - /** Returns the height of the image. */ - public int getHeight() { return header.height(); } - - /** Returns the OpenGL format for this texture; e.g. GL.GL_BGR or GL.GL_BGRA. */ - public int getGLFormat() { return format; } - - /** Returns the raw data for this texture in the correct - (bottom-to-top) order for calls to glTexImage2D. */ - public byte[] getData() { return data; } - - /** Reads a Targa image from the specified file. */ - public static TGAImage read(String filename) throws IOException { - return read(new FileInputStream(filename)); - } - - /** Reads a Targa image from the specified InputStream. */ - public static TGAImage read(InputStream in) throws IOException { - LEDataInputStream dIn = new LEDataInputStream(new BufferedInputStream(in)); - - Header header = new Header(dIn); - TGAImage res = new TGAImage(header); - res.decodeImage(dIn); - return res; - } -} |